Bakes



.3 Sheets-Sheet l Y H...IIIIIIIIIIIIIIIIIIII.IIII..IIHHHHIIUHHII A l! s/ -I II-- I IIII I I IIII III IIII,.HH.IIIIIIIIIIIII tHIIIIIIII :I WIR MHH I.

I I IIN IIIIIIIIIIIII. MIIIH IIIIIIIIIIIIIIHIHIH HIIIIIIIIIIHIHI H H H n f IHIMIIIMHII-- IME w. I-I. SOMMER BAKER I Filed Nov. 21, 1923 I I I I I I I I I I I I I I I I I I I I I I l I I I I .Imran-rma.

l I I I I I I I I I I I I I I I I I I I I I I HHIIIHHHIIIVIUHHIIIIIIIIIIIIII. IIUPUIIHHHIIIIIIIIIIIIIIIII IIIIIIHIIIIIIIIH I II I Dee. 8 1925.

W.A H. SOMMER BAKER Filed Nov. 21, 192s 3 Sheets-Sheet 2 :s sheets-sheet q Dec. 8, 1925.

w. H. SOMMER BAKER Filed Nov. 21. 1923 b WL/mw hu, mw m.

Patented Dec. 8, 1925.

UNITED STATES WILLIAM H. SOMMER, OF PEORIA, ILLINOIS.

BAKER.

Application filed November 21, 1923. Serial No. 676,188.

To all whom t may concern;

Be it known that I, TvVILLIAM H. SOMMER, a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented new and useful Improvements in Bakers, of which the following is a specilication.

rIhis invention has reference to bakers and it relates particularly to that type of baker used for baking iron or steel articles after pickling.

The invention has for its principal object a baker including a plurality of parallel adjoined tunnels adapted to receive the conveying means containing the iron or steel articles to be baked; such adjoining tunnels being separated by common dividing walls, and in the provision of a plurality of separate and independentl parallel arranged combustion chambers, onel for each tunnel and located therebeneath, means being provided for the circulation and extraction of heat from the waste gases leaving the coinbustion chambers.

The invention has for its further object to improve the structure of bakers of the character herein referred to in the provision of a plurality of superimposed and` adj oined tunnels to receive the material to be baked and for-the introduction of the fuel for heating the same. Fach lower tunnel being preferably provided with a combustion chamber having a fuel inlet port in which is introduced the fuel, a transverse tunnel or passageway being provided on the level of the combustion chambers to permit access to the fuel introducing means.

That the invention may be more fully understood reference is had to the accompanying drawings forming a part of the description, illustrating a preferred embodiment of the invention, in which Fig.. 1 is a plan view on a greatly reduced scale showing a baker structure embodying my invention;

Fig. 2 is a front elevation of Fig. 1, partly in section;

Fig. 3 is a vertical sectional detailed view thru one set of superimposed tunnels of the baker structure, as the same would appear if taken on the line 3 3, of Fig. 2;

Fig. 4 is a detailed cross-section in plan, as the same would appear if taken on the line 4 4 of Fig. 3, and on the line 4 4 of Fig. 2;

Fig. 5 is a detailed elevation of superimposed tunnels of the baker structure, as the same would appear if taken on the line 5 5, Fig. 1, and f i v Fig. 6 is a vertical sectional detailed view as the same would appear on the line 6 6 of Fig. 1.

Like cl'iaracters of reference denote corresponding parts thruout the figures.

'lhe baker structure may be of any suitable length, width and depth and includes a plurality of parallelly arranged tunnels 1, approximately on the level with the receiving lioor 2; said tunnels being arranged. to receive the conveying means containing the iron or steel articles to be baked. Beneath each tunnel 1 is a tunnel 3, these con tain the combustion chambers to be described, and also the means for carrying ofil the waste gases from which they absorb heat and then transmit the heat to the baker by radiation. In the arrangement described of the tunnels 1 and 3, they have a superimposed relation as shown.

In the construction of the baker and the superimposed tunnels 1 and 8, I preferably separate the adjoining tunnels 1 and adjoining tunnels 3 by common walls 4, inV which at suitable points are provided pairs of stacks 5 for carrying oiil the waste gases. The entire structure is bounded by a front wall 6, a rear wall 7, and walls 8, and the roof 9 which is arched coincidentally t 10 with each of the tunnels 1. As shown in Figs. 3 and 6 the roof structure 9 embodies a suitable insulator 11 between the arches 1() and the roof proper.

The tunnels l and 3 the spaced transverse steel girders 12, which latter are supported by walls 4 and 8. Parallel longitudinal spaced channel bars 13 are supported by the 'girders 12 and serve as tracks for the conveyor handling the iron or steel articles to be baked. Steel strips 14 seat upon and connect the girders 12 and are disposed between the channel irons 13. These strips 14 are designed to catch the drippings from the iron or steel articles being baked, as will be understood.

The structure` further preferably includes a tunnel 15 below the receiving floor 2 and arranged in front of and transversely to the tunnels 3. Communication is had with the tunnel 15 by means of a stairway 16 leading from the receiving floor 2.

are spaced apart by llO In the construction of the tunnels 1 and 8 the Walls are preferably of refractory material except that metal doors 17 are provided at the front and rear ends of the tunnels 1 as shown, providing closures for the introduction and removal of the conveying means.

rIhe front Wall 6 of the tunnels 3 is provided with fuel inlet ports 18 and such ports are preferably covered by cover plates 19 having openings 2O in communication with the fuel inlet ports and said openings are preferably covered by combined burner doors 21 to which is introduced preferably liquid fuel thru an inlet pipe Q2 connected to a feed pipe 23 and an air supplying means con'iprising pipes 24 connected with a feeder 25.

I have shown a means for supplying liquid fuel to the burners associated with each of the tunnels 3, as I prefer to use such a heating medium. And While I have disclosed in a general way means for conducting` air and liquid fuel to the burners, it is understood that any other suitable means may be provided, as well as any other suitable burner, as the specific burner and air and liquid fuel supplying means herein shown do not form any part of the present invention.

In each of the tunnels 3 and at the front ends thereof are provided combustion chamg bers 2G enclosed Within suitable refractories, each communicating with a fuel inlet port 18. These combustion chambers-may be of any suitable length, but preferably considerably shorter than the length of the tunnels 3 and also less than the Width thereof, see Figs. 3, 4 and 6. Connected with the rear end of each combustion chamber 26 is a preferably metal conduit 27 which extends to a point near the rear end of each tunnel 3 and then doubles back upon itself and is coupled to one of the exhaust stacks 5. As shown in Fig. 4 the conduits 27 in the adjacent tunnels 3 have a coupling with stacks 5 in corresponding Walls 4 separating the adjoining tunnels. The conduits are held suspended by means of hangers 2S connected to the girders 12. It Will be understood from the foregoing that the combustion all takes place in the combustion chambers 26, and that the Waste gases pass from such combustion chambers thru the conduits 27 and out thru the stacks 5. During the passage of the Waste gases thru the conduits 27 they give up a portion of their sensible heat to said conduits and the latter in turn transmit this heat by radiation into the baker proper, communication being had between the tunnels 1 and 3 around and partially between the girders 12 and the channel bars 13 and strips 14. Although not shown, it is understood that the sections comprising the conduit 2T could be provided With ins or Webs in order to increase the radiating surface of the conduits.

Ilach tunnel 1, preferably at or near the rear end is provided with a ventilator 29, which may or may not be provided with a thermostatic control outlet in vents of this character. The purpose of the vent is for the regulation of the ventilation Within the tunnels 1.

I am aware that bakers intended for the purposes herein stated are not new; however, I am not aware of bakers constructed with individual, independently fired compartments, such as herein described. A structure of this kind embodies the followi ing advantages It permits the use of a flexible baking capacity in that bakers not iu use need not be iii-ed, and when more product is being baked more compartments may be put into service. In bakers of the separate compartment type, which are fired as a unit instead of separately, the previous mentioned coudition cannot exist, because it is impossible to shut off the heat from any compartments not in use, and in this manner much fuel is Wasted. For some classes of Work it is essential that the product come from the baker in an absolutely dry condition. In the ordinary baker this is impossible owing to the various stages of dryness of the materials therein. Another adavntage of this type of baker is that different temperatures may be carried in the various compartments in order to take care of the various materials which may be introduced therein. Furthermore, damper arrangements in the ventilators may be operated by thermostatic control, so that suitable circulation may be maintained Within the baker at all times.

What I claim is 1. In a baker, a plurality of spaced Walls defining tunnels, frame Work in the tunnels dividing same into upper baking chambers and lower firing chambers, a combustion chamber in each firing chamber at one end thereof having its sides spaced from the adjacent sides of the firing chamber, exhaust stacks in certain of the Walls, and metal conduits in the respective firing chambers connected at one end to an end of the combustion chamber and extending therefrom to adjacent the opposite ends of the tunnels and thence returning along the opposite side Wall of the tunnel to adjacent the front of the combustion chamber and extending into the stack of said side Wall, and means to support the conduits from the frame Work.

2. In a baker, a plurality of spaced Walls defining tunnels, frame Work in the tunnels dividing same into upper baking chambers and lovver firing chambers, a combustion chamber in each tiring chamber at one end thereof having its sides spaced from the llt) adjacent sides of the firing chamber, eX- haust stacks in certain of the Walls, and metal conduits in the respective firing chambers connected at one end to the combustion chamber and extending to adjacent the opposite end of the firing chamber and having its opposite end extending into the stack gf the adjacent side Wall of the firing cham- 8. In a baker, a plurality of spaced Walls forming tunnels, stacks in certain of the Walls adjacent to the front ends of the tunnels, means dividing the tunnels into upper baking chambers and lower firing chambers, combustion chambers in the firing chambers, and heat conductors in the firing chambers extending from the combustion chambers throughout substantially the length of the firing chambers and having return portions connected to the adjacent stack.

4. In a baker, a plurality of spaced Walls forming tunnels, stacks in certain of the Walls adjacent to the front ends of the tunnels, means dividing the tunnels into upper baking chambers and lower firing chambers, combustion chambers in the firing chambers, and heat conductors in the liring chambers extending from the combustion chambers throughout substantially the length of the firing chambers and having return portions connected to the adjacent stack, and means to support the conductors from the said dividing means in the tunnels.

5. In a baker, a plurality of spaced Walls forming tunnels, stac s in certain of the Walls adjacent to the front ends of the tunnels, combined means for dividing the tunnels into upper baking chambers and lower firing chambers and for providing conveyor supports, combustion chambers in the firing chambers, a substantially U-shaped conduit for each liring chamber connected at one end to the front end of the combustion chamber and extending from the latter toward the rear end of the firing chamber and alongside the combustion chamber and connected at its opposite end to the adjacent stack, and means connected to the combined means and to the conduits to suspendingly support the conduits.

Signed at Peoria, in the county of Peoria in the State of Illinois, this 14th day of November, A. I). 1923.

WILLIAM H. SOMMER. 

